WPC139 Crankshaft Assembly for Yamaha YZ450F

Double forged for superior strength and durability

Shot peened

Oil slots

Coated thrust washers

OEM grade main bearings
Includes crankshaft, main bearings, complete bottom end gasket set, including all seals and gaskets needed for the job.
The crank pin bearings are manufactured from the highest quality hot rolled steel. Case hardened to 58-62C.
The caged needle roller bearings provide the highest possible RPM.
Complete gasket kits are made from premium materials for maximum sealing and reliability.
Complete kits have everything needed for your rebuild.
All bearings are OEM quality for reliability and performance.
This item fits the following vehicle applications:
for Yamaha YZ450F 2003-2005